With a peak power of 6 watts, the Logitech Z150 multimedia speakers deliver full, clear stereo sound—loud enough for you to enjoy your music at home. Easy control is provided through a combination of a volume knob and a power switch. The multimedia speakers also feature a convenient headphone jack for your private listening pleasure. Plug and play convenience: the 3.5mm audio input can be connected to your laptop or smartphone. The Z150 has been tested and optimized in Logitech's modern research and development labs.